Toyota Venza Quiz
Power Assist Systems

Terminals Of Ecu

In this manual: Power Assist Systems
Introduction — 15Maintenance — 8Audio / Video — 102Garage Door Opener — 8Navigation / Multi Info Display — 81Park Assist / Monitoring — 50Brake (front) — 7Brake (rear) — 7Brake Control / Dynamic Control Systems — 79Brake System (other) — 28Parking Brake — 22Axle And Differential — 44Drive Shaft / Propeller Shaft — 24Mf1a Transfer / 4wd / Awd — 46U660e Automatic Transmission / Transaxle — 1241ar-fe Cooling — 311ar-fe Emission Control — 101ar-fe Engine Control — 1331ar-fe Engine Mechanical — 441ar-fe Fuel — 311ar-fe Intake / Exhaust — 211ar-fe Lubrication — 111ar-fe Starting — 16Cruise Control — 241ar-fe Battery / Charging — 162gr-fe Battery / Charging — 17Networking — 67Power Distribution — 8Power Assist Systems — 34Steering Column — 37Steering Gear / Linkage — 29Alignment / Handling Diagnosis — 4Front Suspension — 39Rear Suspension — 35Tire / Wheel — 4Tire Pressure Monitoring — 35Door / Hatch — 83Exterior Panels / Trim — 56Horn — 4Lighting (ext) — 89Mirror (ext) — 36Sliding Roof / Convertible — 26Window / Glass — 87Wiper / Washer — 30Door Lock — 85Heating / Air Conditioning — 82Interior Panels / Trim — 20Lighting (int) — 37Meter / Gauge / Display — 41Mirror (int) — 9Power Outlets (int) — 10Seat — 84Seat Belt — 43Supplemental Restraint Systems — 131Theft Deterrent / Keyless Entry — 155
~2min read
TERMINALS OF ECU

1. CHECK POWER STEERING ECU


HINT:

As connector z8 uses a lock lever, each terminal cannot be checked while the connector is still connected to the power steering ECU.

Terminal No. (Symbol)

Wiring Color

Terminal Description

z8-1 (V)

W

V phase motor output

z8-2 (U)

B

U phase motor output

z8-3 (W)

R

W phase motor output

(a) Measure the voltage and resistance according to the value(s) in the table below.

NOTICE:

When the P/S warning light is illuminated during a malfunction, the fail-safe function may cause the voltage of the power steering ECU terminals to become 0 V.

Terminal No. (Symbol)

Wiring Color

Terminal Description

Condition

Specified Condition

D19-1 (PIG) - D19-2 (PGND)

R - B

Power source

Always

11 to 14 V

D19-2 (PGND) - Body ground

B - Body ground

Power ground

Always

Below 1 Ω

D20-1 (CANH) - D20-7 (CANL)

BR - W

CAN communication line

Ignition switch off

54 to 69 Ω

D20-6 (IG) - D19-2 (PGND)

GR - B

IG power source

Ignition switch ON

11 to 14 V

z9-1 (RZV) - D19-2 (PGND)

R - B

Rotation angle sensor excitation output signal

Engine running, steering wheel being turned

-2.42 to 2.42 V

z9-3 (RZG) - D19-2 (PGND)

B - B

Rotation angle sensor excitation circuit GND

Always

Below 1 Ω

z9-5 (RZCS) - D19-2 (PGND)

L - B

Rotation angle sensor COS aspect output signal

Engine running, steering wheel being turned

-0.73 to 0.73 V

z9-6 (RZSN) - D19-2 (PGND)

Y - B

Rotation angle sensor SIN aspect output signal

Engine running, steering wheel being turned

-0.73 to 0.73 V

z10-5 (TRQ1) - z10-8 (TRQG)

W - B

Torque sensor signal

Engine running, steering wheel not turned (without load)

2.3 to 2.7 V

Engine running, steering wheel turned to right with vehicle stopped

2.5 to 3.8 V

Engine running, steering wheel turned to left with vehicle stopped

1.2 to 2.5 V

z10-6 (TRQV) - z10-8 (TRQG)

R - B

Torque sensor voltage source

Ignition switch ON

4.5 to 5.5 V

z10-7 (TRQ2) - z10-8 (TRQG)

Y - B

Torque sensor signal

Engine running, steering wheel not turned (without load)

2.3 to 2.7 V

Engine running, steering wheel turned to right with vehicle stopped

1.2 to 2.5 V

Engine running, steering wheel turned to left with vehicle stopped

2.5 to 3.8 V

z10-8 (TRQG) - Body ground

B - Body ground

Torque sensor ground

Always

Below 1 Ω

If the result is not as specified, the ECU may have a malfunction.

Test yourself

A quick Toyota Venza quiz: every answer comes with an explanation and a link to the manual page.